performance chip

Has anyone put a performance chip in a 99 Chevy astro van. What kind of results did you get and what was the instillation like.

Not on that yr but on my 2003. Seem to up the power and 10-20% more MPG. Not much but worth the $70 to gain a little edge while pulling my travel trailer. Install was simple, just cap into a couple wires on the Mass Air Flow Sensor. David

Hate to break it to you, but you spent $70 on a 5 cent resistor. There is no "chip"

Also this thread is well over a year old and the OP hasn't been on in months.

Just trying to help... 740,000 strong and I haven't got one reply to my question...